Geological observations on South America. Being the third part of the Geology of the voyage of the Beagle, under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836
By: [Charles Darwin]
Contributors: Sowerby, George Brettingham, 1788-1854; Forbes, Edward, 1815-1854
Publisher: Smith, Elder
Published: 1846
Place of publication: London
Language: eng
Number of pages: 279
Subjects: Geology; Paleontology
Notes: Descriptions of Tertiary fossil shells from South America by G. B. Sowerby, p. [249]-264.

Descriptions of Secondary fossil shells from South America by E. Forbes, p. [265]-268.